Deployment Guide

NOTE: After the Storage Center configuration is complete, run the host access wizard to configure host server access
and apply MPIO best practices. For the latest best practices, see the Dell Storage Center Best Practices document on
the Dell TechCenter site (http://en.community.dell.com/techcenter/storage/).
Two iSCSI Networks with Dual 1 GbE 4-Port Storage Controllers
Use two iSCSI networks to prevent an unavailable port, switch, or storage controller from causing a loss of connectivity between
the host servers and a storage system with dual 1 GbE 4-port storage controllers.
About this task
This configuration includes two fault domains, two iSCSI networks on separate subnets, and two Ethernet switches. The storage
controllers
connect to each Ethernet switch using two iSCSI connections.
• If a physical port becomes unavailable, the virtual port moves to another physical port in the same fault domain on the same
storage controller.
• If an Ethernet switch becomes unavailable, the storage system is accessed from the switch in the other fault domain.
• If a storage controller becomes unavailable, the virtual ports on the offline storage controller move to physical ports on the other
storage controller.
Steps
1. Connect each server to both iSCSI networks.
2. Connect fault domain 1 (shown in orange) to iSCSI network 1.
• Storage controller 1: port 1 to Ethernet switch 1
• Storage controller 2: port 1 to Ethernet switch 1
• Storage controller 1: port 3 to Ethernet switch 1
• Storage controller 2: port 3 to Ethernet switch 1
3. Connect fault domain 2 (shown in blue) to iSCSI network 2.
• Storage controller 1: port 2 to Ethernet switch 2
• Storage controller 2: port 2 to Ethernet switch 2
• Storage controller 1: port 4 to Ethernet switch 2
• Storage controller 2: port 4 to Ethernet switch 2
Example
Figure 41. Storage System with Dual 1 GbE Storage Controllers and Two Ethernet Switches
1.
Server 1 2. Server 2
Connect the Front-End Cabling
45